Safety device for printing presses



Allg 16, 1932- o. D. BAYRl-: 1,871,772

SAFETY DEVICE FOR PRINTING PRESSES :g 15,., y MM5/vra? u @WX Aug. 16,'1932. o. D. BAYRER SAFETY DEVICE FOR PRINTING PRESSES Filed Feb. 29, 1928 4 Sheets-Shea?l 2 Aug. 16, 1932. o. D. BAYRER SAFETY DEVICE FOR PRINTING PRESSES Filed Feb. 29, 1928 4 Sheets-Sheet 3 @Wx 07M @Z4 4 TT /YEY Aug. 16, 1932. Q D, BAYRER 1,871,772

SAFETY DEVICE FOR PRINTING PRESSES Filed Feb. 29, 192s 4 sheets-sheet 4 Patented Aug. 16, 1932 iiNiTi-:D STATES oiesoN D. BAYRER', or HAnTronn, CONNECTICUT, AssIGNoR Tov THEl TRAvEriERs 1N- sUnANCn .contra-NY, or HARTronn, CONNECTICUT, A CORPORATION. on CONNECT- ICUT SAFETY' iinvicn Fon iinIivTIivcrV rniissns Application filed Eebru'ary. 29,192 8. Serial No. 258,949,

My invention relates to that ,classv of devices that are used to prevent in]ur y to an attendant in the operation of printing Y i presses, and an object of my invention, among may be attained, isillustratedinthe accom? panyng drawings, in whichprinting press of ordinary construction equipped with my improved safety device.

Figure 2 is a detail view, scale enlarged,

.. on a plane denoted by. the dotted line 2er-2 20ct Figure 1.

Figure -3 is a view simila'rto Figure 1,7but with parts broken away to illustrate my'improvedjattachment.

A VFigure i is a View similar to Figure 3,'but 25 showing the parts of the press substantially in position for a printing impression. Y

igure 5 is a detail view of aportion o the structure shown in Figuret, andillustrat- Y ing the operation of my improved .attach- 30 ment.

Figure 6 is an isometric view, scale enlarged, illustrating the construction andV operation of my improved safety device, the parts being substantially in the position "5 shown in Figure 5. A F'gure 7 is a view similar to Figure Ll, but illustrating the operation of the attachment. Figures 8 and 9 are detail sectional views, scale enlarged, o-n a plane denoted bythe 4@ dotted line 9-9 Vof Figure 7 Figure 10 is a detail view in side elevation of the trip device and' looking from a point located at right angles to the point of view of Figures S and 9. f i f i :i5 My improved safety device is designed for Vapplication' to a printing press of ordinary construction and is, in fact, an attachment for the automatic operation of parts `heretofore only manually controlled. Y Such a e@ printing press is shown in the :accompanying Figure 1 is la view in. side elevation. offja drawings in which the numeral 5 indicates the: frame. as a' whole vliavingthe usualop'- erative parts supported thereon and which oFFIcsf i N 1 include' a.main`shaft 6 driven as by means' of f a pulley and belt in-.an ordinary manner, a wheel 7, a swinging bed-plate frame 8 supportinga bed-'plate `9*'carrying the type,A and a platen frame 10 carrying a platen l1. vrIn' the particular 'type of press herein. illustrated both the' platen andbed-.plat'e Vhave reciprocating movements with respect to each other.

Thel construction and operation of the nicchanism for effecting thispurpose Lis well'unf Vdersto'od by thosejskilled'in the art" andl for this reason a ldetailed description. ofv such construction and operationvof the press mech'- anism'is omitted herein, except to remark that the bed-plate. frame 8 is operated; by Vcrank rods or'pitmen12jpvotallyconnectedat 'each endto opposite sidesiof the vloed-platev frame and to crank discs 1 3 securedto opposite ends of a shaftltsuitably*connected as by. agear and pinion with". the" main shaft 6i" The be readily understood; 'j Y. v

In machines of this kind means are provided to preventprinting under certain :con-

ditions, aslwhen a sheet of paper has-been iinproperly placed fon' the'platemand this-'is platen frame 10`isoperatedin thensual'ma'ni- ,Q ner; Aninking frame rodl5is pivotallfy'at# tached at one end to theframe ofthe machine Y y and atits oppositeend to the-side of an 'inking fram'e'lAV andoperated ina manner that will accomplished mounting the pitmen" or Y crankrods 12 oneccentrics 17 located` at the endsof a releasing shaft-,'18 mounted for es# cillatingfmovement inthe bed-plate' frame 8; v Thisv shaft 18 isjmanually operatedy as means of aha'ndle lever 19 pivotally ymountedy ont-he frame 5 and'having a handle 20"loca`ted in convenient positionv for access to the operator of the machine. This 'connection' com Y prises 'a' rod21 pivotallyattached at' its opi posite ends to the lever 19 and to `a lever 22 pivotally Vmounted on theframe 5 and compris'ing an armto which-the rod 21 is attached, a pivot extending through aside part of the frame and asecond armv ontheopp'osite'side-ofthe frame fromfthe rs't,` said' sec-k f ond arm' having a pin 23engaged in a slot in 6 of the, drawings'.V The low'erend of the l @D 46 ofa' tripping frame,pwh ich frame vcomthe frame and having a second arm to which an4 actuating rod 25 is pivotally attached.

The other end of said rod is pivotally attached to an actuating finger 26 projecting from the releasing shaft 18, The lever 22 has stop fingers 27 'positioned yto engagea stop pin 28 constituting va projecting end of the pivot for the lever 24 to limit swinging movement of the lever 22. f

All. ofthe parts thus far 'describedare of old and well known construction and eX-j cept in connection with other parts now to -be described form no part of my present inven-k tion, it being understoodthat when :the "han:

`dle lever 19 islmoved from the; position shown in 'F-igure 1 ito the positionshown in Figure 7 ,y the eccentrics 17 willy be rotated Vfrom the lposition shownfin Figures2. and v3 t-of'theY position shown inv dotted'lines in Figure 7,

thereby moving the bed'plate backward relatively to the erankdisc 13 4and thereby pre'- venting close approach of the bed i9 and pla-ten 11, and as illustratedin Figure 7 "Incarrying my inventioninto elfectl pro-A vide a trip rod 29 thatispivotally connectedV at one end-with'the bedeplateframe .8 and atY its oppositeendfpasses through a trip case 30 attached to and projecting fromV an actuator 43 to be moreparticularlyhereinafter described, and asillustrat'edin Figure 6k ofl the drawings.'k Said case 30 .contains a spring actuated tripstop 31 having a beveled end forcedby said spring toward the trip rod p and adapted to engage a recess 32 therein.`

In thereeiprocating .movements of ,the frame 8 *the rod` 29 plays .backfandforth through its opening in 4:thel case 3 0, and the' stop 31is .held frommoving intoth'e recess 32 by a' retaining latch 33 pivotally supported by the .actuator 43 and'conn'ectedby a trip actuating rod 34 with a tripping rod 35 atithe upper end of the latter, ythe V end of .the rod 34 being supported in an opening in a bolt rod 35 is pivotally attachedto one arm offa trip actuatinglever 37 the opposite arm of said leverbeing connected by a link-38 with the lever 139l is connected bya link `41 with Va controlling leverv42 pivotallyattached tosaid link ,idto'the bracket 4Q and act-ing to main-` aiirthehorizpntal,position of parte.

.'Atrippingtongue44 is pivotally supported "i on the link'41 and in the path ofk movement v of 'atripper 45 rigidly, secured to one branch prises'acontactor 47:'infthe formof aplate yextendingacross Athe upper edge-'of the platen 11,`ftliere being Va. branch 46 rigidly secured at each end of the c'o'ntactory and extending A downwardly v along ends vof said platen,

Vtongue 44, which is its position when the machine is ready` for insertion of, a sheet of paper, fina'circular path downwardly to a position below said tripping tongue, the ends of the tripper and tongue, in this operation,

'contacting with one another, and forcing the contaetor 47 to the position shownby dotted lines lin Figure 5, thus covering the s'pace'be- Ytweenthe platen -and bed-plate at the time when said parts are approaching each other and preventingan'attendant from placing -his hands in this space, as for vthe purpose of retrievinga misplaced sheet of paper. lThis movement of the tripper 45 downwardlyina circular path from aposition above the tongue 44, shownin Figs. 1 and 3, to a position bclow the., tongue 44, asv shown in Fig. 4, is accomplished due to the; fact that the tripper 45 is mounted onthe `frame 46 of the contactor 47, theY said frame 46being secured to the platen frame 1Q.` This circular downward movement therefore occurs simultaneously with the movement ofthe platen frame'lO from a substantially horizontal position,l as shown iii-Fig. 3,. to a'substantially vertical position infengagementwith the bed plate'9' whichhas been pivoted towardthe advancing platen frame by movement ofthe bedl plateV framel 8. In, theV vreturn. movement of the parts the tripping tongueV 44k turns on its pivot and allows the tripper'45 to pass it, and the'conta-ctor 47 is returned to its normal position by striking l by any other suitable means. n,

v Inthis printing movementof thepartsjust 'of a erV and beforesai'd late and Vv)laten l)A P a. p l

have. closed Vsuiiicient to'prevent this, as illus Vtrated 1n Figure 7, the pressure of the forearm against the `edge of the contactor 47 will 'hold'the latter from forward movement with a result that the tripperf45 striking the upper part of'thetongue 44 will force the latter backwardly, thus swinging the lever 39 kon its pivot and operating the trip actuating lever 37 to push the trip 35, and conse-A quently 'Y the actuating rod 34, v upwardlyQ This lifts the retaining latch 33 from engagement with the trip stop 31,'allowing thelatter f to move inwardly under'the influence Vof its spring. Asthe trip rod 29 now movesV forwardly said stop 31 enters the recess 32 and 'one' arm of a lever 24 pivotally mounted in these branches 46 being` pivotally attached 0" against the bedfplate'), or j contacts with the shoulder of said recess.

It will be notedV that the actuator 43 servesl and operates the regular safety mechanism which, as herein set out, is comprisedin printing presses as heretofore made.

The eccentric as shown hereincomprises a projecting stud eccentrically positioned on the end of the shaft 18 and an eccentric sleeve on'said stud.V The parts are thus arranged in order Vto adapt my attachment to presses in common use, but it will be understood that this eccentric may be composed of a single piece ifdesired.V Y Y In accordance with the provisions of the patent statutes I have described the principles of voperation of my invention, together with the dveice which I'now consider to represent the best embodiment thereof; but I desire to haveit understood that the device shown is only illustrative and may be carried out by other means `and applied to usesV other than those above set out.

I claimy l. Incombination with the relatively mov-` able bed and platen of .aprinting press together with mechanism including an eccentric for varying the-degree of approach of said parts one toward the other and an actuating lever `pivoted ona portion of the frame of the press and connected to the eccentric', a contacter relatively movably supported upon one of saidparts, a connection between said contacter and the actuating lever'of said mechanism to eifect, by reason of movement of saidcontactor on its support, operationof said eccentric to increase the distance between said parts at their nearest approach,

and means for disconnectingsaid connection to permit movement of said actuating leverV independently of said mechanism.

`2. In combination with the relatively mov able bed and platenof a printing press tomeans for disconnecting said connection to permit movement of said actuating lever 1n- Ydependently of 'said mechanism.` f

- 3. In combination with the relatively mov- Y able bed Vand -platen of 'a printing press together with mechanismfor varying'th'e degree of approachofsaid-parts one toward the other, a contacter relatively'movably supl ported by said platen, a movably mounted actuator connected with said mechanism to effect its operation,` atrip rod loosely en-4 gaged with said actuator for movementin- .dependently thereof and connectedv with one of said parts for. simultaneous movement therewith, means for rigidlyy connecting said trip rod with said actuator, and a connection between said contactor andrsaid connecting means to effect said rigid connection.

v 4. In combination with the relatively movable-bed and platen of a printing press together with mechanism for varying the degree of approach of said parts one toward'the other, a contactor relatively movably sup.- ported upon Vone of Vsaid parts, a movably mounted actuator connectedfwith said mechanism to effect its operation, a-trip rod loosely engaged with said actuator for movement independently thereof andi-secured to-vsaid bed for simultaneous movement therewith, means for rigidly connecting said trip rod with said actuator, and a connection between said contactor and said'connecting means to eect said rigid connection. i

5. In combination withthe relatively mov-' nism to effect its operation, a trip rod secured to one of said parts for movement therewith and loosely engaged with said actuator for movement independently thereof, a trip stop mounted on said actuator and adapted toengage said trip rod, and av connection between so Y said trip` stop and said contactor for'operation ofthe stop by said contactor.

, 6. In combination with the relatively movable bed and 4platen of a printing press including mechanism for varying the degree of approach of said members/one toward the other, a contactor relatively movably supported on one of said parts, a movably mounted actuator connected with'said mechanism to effect its operation, a trip rod secured to one of said parts for movement thereby and loosely engaged with said actuator for'movement `independently thereof, a trip" stop spring pressedtoward said .trip rod and adaptedto engage therewith,ia latch for holding said lstop from movement by said spring, anda connection between said latch and said Vcontactor for operation of the latter by the former.

7. In combination-with the relatively movother, acontacter 'relatively movably Vsupable bed and platenof a printing pressin-A anism to effect its opera-tion, a trip rod se- -tuator for movement independently thereof,

cured to' one of said parts for movement therewith and loosely engaged 1 with saidl aca trip stop movablyV mounted'on said actuatorffor engagement with said trip rod to secure the latter tothe actuator, a latch adapted for engagement with said stop, an actuating rod movably mountedvon said actuator and engaged with said latchrtooperate it, and al connection between said rod and said contactor for operation of the former by the latter. c 1

8. In combination with the relatively movable bed' and'platen' of aprinting press including mechanism for varying the degree of approach ofsaid parts onel toward tlie'other, a contactor relatively movably supported on one of saidparts, a tripper carried by the movable support for Vsaid contactor for the operation of one by the other, a tripping tongue mounted upon amovable support for intermittent engagement with saidY tripper, means for efecting conditional movement of said tripping tongue-.and tripper each by the other but independently thereof, a connection betweensaid tripping tongue and said mechanism for -causing operation of the latter and meansfor disconnecting saidVV connection to permit movement of said actuating lever independently ofsaid mechanism. Y V 9. In combination with the relatively movable bed and platen of a printing press together with mechanism for lvarying the degreeof approach of saidparts one toward theother, a contactor frame including acontactor pivotally supported onl said platen, a tripper supported by said frame between the pivot tor the latter and the contactor, a trippingtongue mounted upon-a movable support for engagement withv said trippeiymeans vfor eiecting conditional movement of said tripper and tripping tongue Veach by the ,other but independentlythereof, a connectionbe-y tween said tripping tongue and said mecha-y nism for causing operationiof the latter and means for disconnecting said connection to Vpermit movement of said actuating lever independently of said mechanism'.y Y c 10. In. combination with the relatively movablebed and platen ofa printing press, together with mechanism for varying the degree of approach of said parts one toward the other, av frame pivotally mounted on the platen and including a contactor movable b v the pivotal VVaction of the frame beyond the front edge ofthe platen when the latter is moved toward said bed,y a connectionbetween said mechanism andsaidrcontactor including a VVtripper carried: by said frame, a tripping tongue mounted on a movable support, means Jfor effecting conditional 'movement of vsaid Y tripper and tripping tongue each by the other .but independently thereoii, connection between saidmovable support 'and said mechanism for operation'of the 'latter by the for- Vmer when anobstructionis positioned between the contactor and the movable bed and means for disconnectingsaid connection to permit movement of said actating leverinde'- pendently of` said mechanism.

ll. The combination with a printingpress comprising relatively movable body and platen members, and mechanism Jfor causing said relative movement, said mechanism including means forvaryingthe degree of approach of said members, of a trainof mechanical elements operable to actuate saidjmeans to prevent full approach of the members, a movable contactor supported by oneoil said members'normally in an inoperative position rearwardly of the working face of said member, and cooperating devices attachedto thecontactorfand the said .train of mechanical ele- .ments land adaptedto temporarily engage proach of said members, of a train olrme-4 chanical elements f operable toy actuatesaid means to prevent full approach ofthe members, a movable contactor supported by one of said members normally in an inoperative position rearwardly of the working face of said member, and cooperatingV devices attached to the contactor and the said train of mechanical elements and adapted -to--temporarily engage eachother for forcing the contactor from its inoperative position vinto an operative posiltionvonly during a portion vol the approach movement of the members, one of said devices having a one way lost motion connection with the part to which itis attached to permit the devices to -en gage during separation of the members without moving the contactor relative to its supporting member.

4 13. The combination with a printing press comprising relatively movable body a nd platenmembers, and mechanism for causing said relative movement,said mechanism including means or'varying'the degree of approach of saidv membermota -train of mechanical elements operable toY actuate vsaid means to prevent full approach of the members', a movable contactor supported byone of said members normally in an inoperative position rearwardly of the-working face ofsaidfmember, and` cooperating devices attached tothe contactor and the said train of mechanical elements and adapted to temporarily-engage each other for forcing the contactor fromits inoperative position into an. operative position only during a portion of the approach movement Vof the members, the engagement of said devices causing operation of the said train of elements if an obstruction prevents movement of lie contactor relative to its supporting mem- 14. The combination With a printing press comprising relatively movable body and yplaten members, and mechanism for causing said relative movement, said mechanism including means for varying the degree of approach of said members, of a train of mechanical elements operable to actuate said means to prevent full approach of the members,.a movable contactor supported by one of said members normally in an inoperative position rearwardly of the Working face of said member, and cooperating devices attached to the contactor and the said train of mechanical elements and adapted to temporarily engage each other for forcing thecontactor from its inoperative position into an operative position only during a portion of `the' approach movement of the members, the

.engagement of said devices causing operation of the said train of elements if an obf struction prevents movement of the contactor relative to its supporting member, one of said devices having a one Way lost motion connection with the part to Whichit is attached to permit the ydevices to engage during sepa- Y ration of the members Without moving the y contactor relative to its supporting member.

Y ORSON D. BAYRER. 

